Covert feather

The uppertail and undertail coverts cover the base of the tail feathers above and below.

The "tail" of a peacock is made of elongated uppertail coverts.

The upperwing coverts fall into two groups: those on the inner wing, which overlay the secondary flight feathers, known as the secondary coverts, and those on the outer wing, which overlay the primary flight feathers, the primary coverts.

Within each group, the feathers form a number of rows.

In addition, the front edge of the wing is covered with a group of feathers called the marginal coverts.

Topside of a chicken wing showing all major feather groups
A rear view of an Indian peacock 's true tail and elongated uppertail covert feathers